Move remote_channel_main logging flag into launch script and add blimp module verbose logging

blimp/engine/start_engine.sh

 #!/bin/bash
 
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# Luanch stunnel once and only once. This should never crash, but if it does,
+# Launch stunnel once and only once. This should never crash, but if it does,
 # everything should die.
 stunnel \
   -p /engine/data/stunnel.pem \
   -P /engine/stunnel.pid \
   -d 25466 -r 25467 -f &
 
 # Start (and restart) the engine so long as there hasn't been an error.
 # Currently, the engine can cleanly exit in the event that a connection is lost.
 # In these cases, it's safe to restart the engine. However, if either stunnel or
 # the engine exit with a nonzero return code, stop all execution.
 while :; do
   LD_LIBRARY_PATH=/engine/ /engine/blimp_engine_app \
     --android-fonts-path=/engine/fonts/font_bundle/marshmallow \
     --blimp-client-token-path=/engine/data/client_token \
+    --vmodule="remote_channel_main=1,blimp*=1" \
     $@ &
 
   # Wait for a process to exit. Bomb out if anything had an error.
   wait -n  # Returns the exited process's return code.
   retcode=$?
   if [ $retcode -ne 0 ]; then
     exit $retcode
   fi
 done